20888955927

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{857}}^1\times {\mathrm{2909}}^1$

素因数の和:3805

約数の個数: 72

約数和(自身を含む): 37002279600

約数和(自身を除く): 16113323673

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 147, 171, 399, 441, 857, 931, 1197, 2571, 2793, 2909, 5999, 7713, 8379, 8727, 16283, 17997, 20363, 26181, 41993, 48849, 53991, 55271, 61089, 113981, 125979, 142541, 146547, 165813, 183267, 341943, 377937, 386897, 427623, 497439, 797867, 1025829, 1160691, 1282869, 2393601, 2493013, 2708279, 3482073, 7180803, 7479039, 8124837, 17451091, 22437117, 24374511, 47367247, 52353273, 122157637, 142101741, 157059819, 331570729, 366472911, 426305223, 994712187, 1099418733, 2320995103, 2984136561, 6962985309, 20888955927]

約数ペア:

[(1, 20888955927), (3, 6962985309), (7, 2984136561), (9, 2320995103), (19, 1099418733), (21, 994712187), (49, 426305223), (57, 366472911), (63, 331570729), (133, 157059819), (147, 142101741), (171, 122157637), (399, 52353273), (441, 47367247), (857, 24374511), (931, 22437117), (1197, 17451091), (2571, 8124837), (2793, 7479039), (2909, 7180803), (5999, 3482073), (7713, 2708279), (8379, 2493013), (8727, 2393601), (16283, 1282869), (17997, 1160691), (20363, 1025829), (26181, 797867), (41993, 497439), (48849, 427623), (53991, 386897), (55271, 377937), (61089, 341943), (113981, 183267), (125979, 165813), (142541, 146547)]